Title:
LIFT OF SHOES
Document Type and Number:
Japanese Patent JP3106330
Kind Code:
B2
Abstract:
PURPOSE: To expand the range for selecting thermoplastic polyurethane elastomers and to improve durability by incorporating ultra-fine carbon fibers into an urethane resin and combining these fibers and the resin without impairing the molding conditions of the urethane resin.
CONSTITUTION: The lift is produced by adding the general-purpose carbon fibers 1 of a pitch system made from coal tar pitch which does not mingle with other materials to polyurethane 2, then mixing and combining both. Namely, the raw carbon fibers of fineness of a micron unit are cut and pulverized to (0.9μm and are mixed and molded to complete the lift 3. The characteristics inherent to the urethane resin and the characteristics inherent to the carbon fibers act on each other if the lift is constituted in such a manner. The lift having a synergistic effect is thus obtd. Namely, the carbon fibers are enclosed in the urethane resin to form a composite material by incorporating and mingling the carbon fibers into and with the polyurethane elastomer material, by which the tough composite mixture having the increased tensile strength and tear strength and the repulsive elasticity is obtd.
More Like This:
| WO/2000/076335 | ADJUSTABLE FOOT ORTHOTIC |
Inventors:
Yoshikazu Hirai
Application Number:
JP26070592A
Publication Date:
November 06, 2000
Filing Date:
September 03, 1992
Export Citation:
Assignee:
Hiro International Co., Ltd.
K&J Office
K&Y Corporation
Edogawa Manufacturing Co., Ltd.
K&J Office
K&Y Corporation
Edogawa Manufacturing Co., Ltd.
International Classes:
A43B21/02; A43B21/20; B29C45/00; B29K75/00; B29K105/06; B29L31/50; (IPC1-7): A43B21/02; B29C45/00; B29K75/00; B29K105/06; B29L31/50
Domestic Patent References:
| JP4101604U | ||||
| JP63150507U |
Attorney, Agent or Firm:
Taizo Sugiyama